A melting furnace waste heat recycling mechanism

Abstract

The utility model relates to a melting furnace waste heat recycling mechanism, including the melting furnace heating device for heating melting object, and the melting furnace heating device includes heating equipment, and the heating equipment top is provided with the smoke exhaust pipe for smoke transmission, and the smoke exhaust pipe's smoke end is provided with the filter device for the particle in smoke filtering, and the filter device far side is provided with the heat exchange device for the smoke waste heat transmission, and the heat exchange device one end is connected with the water pump for the heat conduction liquid delivery, and the heat exchange device far water pump one end is connected with the water storage tank, and the filter device can effectively filter the smoke dust, and the maintenance cost of subsequent equipment is reduced, and the heat exchange device improves the waste heat absorption efficiency, and the energy waste is reduced, and simultaneously, the low-temperature flue gas emission after treatment avoids the damage of high temperature to equipment and the heat pollution of environment.

Description

Technical Field

[0001] This utility model relates to the field of waste heat utilization technology in melting furnaces, specifically to a waste heat recycling mechanism for melting furnaces. Background Technology

[0002] In industrial production, melting furnaces, as key equipment for achieving high-temperature smelting of materials, are widely used in metal smelting, glass manufacturing, and other fields. Melting furnaces generate a large amount of high-temperature flue gas during operation. This flue gas contains abundant waste heat. Effective recovery and utilization of this waste heat can significantly reduce energy consumption and improve the economic and environmental efficiency of production. Currently, existing waste heat utilization technologies for melting furnaces are inadequate. The flue gas exhaust system lacks effective filtration devices, allowing a large amount of dust contained in the high-temperature flue gas to directly enter subsequent processing stages. This not only easily causes pipe blockage and equipment wear but also affects the efficiency of waste heat recovery.

[0003] However, the existing flue gas systems of melting furnaces are not equipped with high-efficiency filtration devices, and a large amount of dust contained in the high-temperature flue gas directly enters the subsequent waste heat treatment stage. This dust easily causes pipe blockage and internal wear of equipment, which not only increases the difficulty and cost of equipment maintenance, but also hinders flue gas circulation and reduces waste heat recovery efficiency. Even if some equipment is equipped with a simple filtration structure, there is a lack of automatic cleaning mechanism for the filter components. After long-term use, the filter plates are easily blocked by dust, requiring frequent manual disassembly and cleaning. This not only increases the cost of manual maintenance, but also causes the melting furnace to shut down, disrupting the continuity of production and affecting overall production efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a mechanism for recycling waste heat from a melting furnace, thereby solving the problems mentioned in the background section of the prior art.

[0005] This utility model provides the following technical solution: a melting furnace waste heat recycling mechanism, including a melting furnace heating device for heating and melting the object to be melted, the melting furnace heating device including a heating device, a smoke exhaust pipe for smoke transmission is provided on the top of the heating device, a filter device for filtering particulate matter in the smoke is provided at the smoke outlet end of the smoke exhaust pipe, a heat exchange device for transmitting waste heat of the smoke is provided on the side away from the filter device, one end of the heat exchange device is connected to a water pump for transporting heat-conducting liquid, and a water storage tank is connected to the end of the heat exchange device away from the water pump.

[0006] As a preferred embodiment of the above technical solution, the filtration device includes a filter cover, which is fixedly connected to the smoke outlet end of the exhaust pipe. A fixing block is fixedly connected to the outside of the filter cover, and a motor is fixedly connected to the upper end of the fixing block.

[0007] As a preferred embodiment of the above technical solution, the motor is sleeved on the upper part of the center side inside the filter cover, and a lead screw is fixedly connected to the rotating end of the motor on the side side. A limit block is rotatably connected to the outer end of the lead screw away from the motor, and the limit block is fixedly connected to the upper part of the center of the inner wall of the filter cover away from the motor. A scraper is threaded onto the outer surface of the lead screw.

[0008] As a preferred embodiment of the above technical solution, two filter plates are snapped onto one side of the center of the inner cavity of the filter cover, and the scraper is slidably sleeved on the outside of the two filter plates. A dust collection shell is fixedly connected to the lower end of the filter cover, and a dust collection box is slidably connected to the inner cavity of the dust collection shell.

[0009] As a preferred embodiment of the above technical solution, the heat exchange device includes a heat exchange hood, which is connected in communication with a filter hood. A spiral heat exchange tube is fixedly connected to the inner cavity of the heat exchange hood, and both ends of the spiral heat exchange tube pass through the two inner walls of the heat exchange hood and extend to the outer side of the heat exchange hood near both ends.

[0010] As a preferred embodiment of the above technical solution, the spiral heat exchange tube is fixedly connected to an inlet pipe and an outlet pipe at both ends, an exhaust port is fixedly fitted inside the heat exchange hood at the upper part, a water pump is fixedly connected to the inlet end of the inlet pipe, and a water storage tank is fixedly connected to the outlet end of the outlet pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, high-temperature flue gas enters the filtration device after being purified through the exhaust pipe, and then enters the heat exchange device to fully exchange heat with the water in the spiral heat exchange tube. The spiral heat exchange tube increases the heat exchange area, which can more efficiently absorb the waste heat in the flue gas, allowing the water resources to fully absorb heat, improving the waste heat recovery and utilization rate, and reducing energy waste.

[0012] Based on the aforementioned beneficial effects, the filter hood in this utility model's filtration device is equipped with two filter plates, which can effectively filter the dust in the flue gas, reducing the pollution and blockage of subsequent heat exchange devices and pipelines caused by the dust. Simultaneously, the motor drives the lead screw to rotate, causing the scraper to move across the surface of the filter plates, promptly cleaning the dust adhering to the filter plates, preventing filter plate blockage from affecting flue gas flow and filtration efficiency, reducing equipment maintenance costs, and ensuring the stability of the filtration effect. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure of a waste heat recycling mechanism for a melting furnace; Figure 2 A schematic diagram of the structure of a furnace heating device for a waste heat recycling mechanism in a melting furnace; Figure 3 This is a schematic diagram of the connection structure between the filtration device and the heat exchange device of a waste heat recycling mechanism for a melting furnace. Figure 4This is a schematic diagram of the internal structure of a filter device in a waste heat recycling mechanism for a melting furnace.

[0014] Figure 5 This is a schematic diagram of the heat exchange device structure of a waste heat recycling mechanism for a melting furnace.

[0015] In the diagram: 1. Melting furnace heating device; 101. Heating equipment; 102. Exhaust pipe; 2. Filtration device; 201. Filter cover; 202. Fixing block; 203. Motor; 204. Lead screw; 205. Limiting block; 206. Scraper; 207. Filter plate; 208. Dust collection shell; 209. Dust collection box; 3. Heat exchange device; 301. Heat exchange cover; 302. Spiral heat exchange tube; 303. Water inlet pipe; 304. Water outlet pipe; 305. Exhaust port; 4. Water pump; 5. Water storage tank. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0017] Please see Figures 1-5 As shown, this utility model provides a technical solution: a waste heat recycling mechanism for a melting furnace, including a melting furnace heating device 1 for heating and melting the object to be melted. The melting furnace heating device 1 includes a heating device 101. A smoke exhaust pipe 102 for smoke transmission is provided on the top of the heating device 101. A filter device 2 for filtering particulate matter in the smoke is provided at the smoke outlet end of the smoke exhaust pipe 102. A heat exchange device 3 for transmitting waste heat from the smoke is provided on the side of the filter device 2 away from the heating device 101. A water pump 4 for transporting heat-conducting liquid is connected to one end of the heat exchange device 3. A water storage tank 5 is connected to the other end of the heat exchange device 3 away from the water pump 4.

[0018] The filter device 2 can effectively filter smoke and dust, reducing the maintenance costs of subsequent equipment. The heat exchange device 3 improves the waste heat absorption efficiency and reduces energy waste. At the same time, the treated low-temperature flue gas emission avoids high-temperature damage to equipment and thermal pollution to the environment.

[0019] As one implementation method in this embodiment, please refer to Figures 1-3 As shown, the filter device 2 includes a filter cover 201, which is fixedly connected to the smoke outlet end of the exhaust pipe 102. A fixing block 202 is fixedly connected to the outside of the filter cover 201, and a motor 203 is fixedly connected to the upper end of the fixing block 202.

[0020] The filter cover 201 is directly fixed to the smoke outlet end of the exhaust pipe 102, ensuring the sealing and stability of the smoke transmission path. By fixing the fixing block 202 to the outside of the filter cover 201 and installing the motor 203 on the upper end of the fixing block 202, a stable support is provided for the motor 203, and the motor 203 is prevented from directly contacting the high-temperature smoke inside the filter cover 201, thus reducing the damage of high temperature to the motor 203.

[0021] As one implementation method in this embodiment, please refer to Figures 1-4 As shown, the motor 203 is sleeved on the upper part of the center side inside the filter cover 201, and the rotating end of the motor 203 on one side is fixedly connected to the lead screw 204. The outer end of the lead screw 204 away from the motor 203 is rotatably connected to the limiting block 205, and the limiting block 205 is fixedly connected to the upper part of the center of the inner wall of the filter cover 201 away from the motor 203. The outer surface of the lead screw 204 is threaded with a scraper 206.

[0022] The rotating end of the motor 203 is fixedly connected to the lead screw 204, which can provide a stable driving force for the lead screw 204. When the lead screw 204 rotates, it drives the scraper 206 to move through the threaded transmission. The limiting block 205 not only restricts the axial displacement of the lead screw 204, but also ensures the stability of the lead screw 204 when rotating.

[0023] As one implementation method in this embodiment, please refer to Figures 3-4 As shown, two filter plates 207 are snapped onto one side of the center of the inner cavity of the filter cover 201, and a scraper 206 is slidably sleeved on the outside of the two filter plates 207. A dust collection shell 208 is fixedly connected to the lower end of the filter cover 201, and a dust collection box 209 is slidably connected to the inner cavity of the dust collection shell 208.

[0024] Two filter plates 207 are snapped into the inner cavity of the filter cover 201. The dual filtration can significantly improve the interception efficiency of particulate matter in the smoke and reduce the amount of smoke entering the subsequent heat exchange device 3. The scraper 206 is slidably sleeved on the outside of the two filter plates 207. When the scraper 206 moves under the drive of the screw 204, it can clean the surface of the two filter plates 207 at the same time. The dust collection shell 208 at the lower end of the filter cover 201 can receive the smoke and dust scraped off by the scraper 206. The dust collection box 209 is slidably connected to the dust collection shell 208, so that the collected smoke and dust can be quickly removed and processed, which not only avoids secondary pollution of smoke and dust, but also reduces the labor intensity of manual cleaning and reduces equipment maintenance costs.

[0025] As one implementation method in this embodiment, please refer to Figures 3-5 As shown, the heat exchange device 3 includes a heat exchange cover 301, which is connected to the filter cover 201. A spiral heat exchange tube 302 is fixedly connected to the inner cavity of the heat exchange cover 301. The two ends of the spiral heat exchange tube 302 pass through the two inner walls of the heat exchange cover 301 and extend to the outer side of the heat exchange cover 301 near both ends.

[0026] The inner side of the heat exchange shroud 301 is wrapped with an insulation layer made of rock wool. Rock wool has excellent thermal insulation properties, which can effectively prevent the heat inside the heat exchange shroud 301 from spreading to the outside, allowing more waste heat to be absorbed by the heat-conducting liquid inside the spiral heat exchange tube 302, thereby improving the waste heat recovery and utilization rate and further reducing energy waste.

[0027] The heat exchange hood 301 is connected to the filter hood 201, allowing the filtered and purified flue gas to directly enter the heat exchange device 3 without the need for an additional flow guiding structure. This reduces resistance and heat loss during flue gas transmission and ensures the continuity of waste heat recovery. The spiral heat exchange tube 302 fixed inside the heat exchange hood 301 significantly increases the contact area and contact time with the flue gas through its spiral design, allowing the waste heat in the flue gas to be more fully transferred to the heat-conducting liquid inside the tube, improving waste heat absorption efficiency and reducing energy waste.

[0028] As one implementation method in this embodiment, please refer to Figures 1-5 As shown, the spiral heat exchange tube 302 is fixedly connected to a water inlet pipe 303 and a water outlet pipe 304 at both ends, and an exhaust port 305 is fixedly fitted inside the heat exchange cover 301 at the upper part. A water pump 4 is fixedly connected to the water inlet end of the water inlet pipe 303, and a water storage tank 5 is fixedly connected to the water outlet end of the water outlet pipe 304.

[0029] The fixed connection between the water inlet pipe 303 and the water pump 4, and the water outlet pipe 304 and the water storage tank 5, ensures the sealing of the water flow and avoids efficiency reduction or equipment failure caused by leakage of heat-conducting liquid; the fixed sleeve design of the exhaust port 305 ensures the stability of the flue gas emission path.

[0030] Working principle: The high-temperature flue gas generated by the heating device 1 of the melting furnace when heating the object to be melted is discharged through the exhaust pipe 102 at the top and enters the filtration device 2 for purification. The high-temperature flue gas first enters the filter cover 201 and is filtered by two filter plates 207 to remove dust and other impurities. During the filtration process, the motor 203 on the fixed block 202 drives the lead screw 204 to rotate, which drives the scraper 206 to move back and forth along the surface of the filter plate 207, scraping off the dust attached to the filter plate 207. The scraped dust falls into the dust collection shell 208 at the lower end of the filter cover 201 and is collected in the slidable dust collection box 209 for regular cleaning.

[0031] The filtered clean flue gas enters the heat exchange hood 301, which is connected to the filter hood 201, and comes into full contact with the spiral heat exchange tubes 302 inside the heat exchange hood 301. The residual heat in the flue gas is transferred to the water flowing inside the tubes. After heat exchange, the low-temperature flue gas is discharged through the exhaust port 305 at the upper end of the heat exchange hood 301. The water pump 4 injects cold water into the spiral heat exchange tubes 302 through the water inlet pipe 303. The cold water absorbs the residual heat and heats up, and then flows through the water outlet pipe 304 to the water storage tank 5 for storage, to be used in subsequent heating scenarios.

[0032] Through the above process, the high-temperature flue gas from the melting furnace is purified, waste heat is recovered and recycled, and the automatic cleaning mechanism ensures the long-term stable operation of the equipment.

[0033] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A mechanism for recycling waste heat from a melting furnace, characterized in that: The furnace includes a heating device (1) for heating and melting a molten object. The heating device (1) includes a heating device (101). The top of the heating device (101) is provided with a smoke exhaust pipe (102) for smoke transmission. The smoke exhaust pipe (102) is provided with a filter device (2) for filtering particulate matter in the smoke at its smoke outlet end. A heat exchange device (3) for transmitting waste heat from the smoke is provided on the side of the filter device (2) away from the heating device (101). One end of the heat exchange device (3) is connected to a water pump (4) for transporting heat-conducting liquid. The end of the heat exchange device (3) away from the water pump (4) is connected to a water storage tank (5). The filter device (2) includes a filter cover (201), which is fixedly connected to the smoke outlet end of the exhaust pipe (102). A fixing block (202) is fixedly connected to the outside of the filter cover (201), and a motor (203) is fixedly connected to the upper end of the fixing block (202). The motor (203) is sleeved inside the filter cover (201) at the upper center of one side, and the rotating end of the motor (203) at one side is fixedly connected to a lead screw (204), and the outer end of the lead screw (204) away from the motor (203) is rotatably connected to a limit block (205), and the limit block (205) is fixedly connected to the upper center of the inner wall of the filter cover (201) away from the motor (203), and a scraper (206) is threaded onto the outer surface of the lead screw (204). Two filter plates (207) are snapped onto one side of the center of the inner cavity of the filter cover (201), and the scraper (206) is slidably sleeved on the outside of the two filter plates (207). A dust collection shell (208) is fixedly connected to the lower end of the filter cover (201), and a dust collection box (209) is slidably connected to the inner cavity of the dust collection shell (208).

2. The waste heat recycling mechanism for a melting furnace according to claim 1, characterized in that: The heat exchange device (3) includes a heat exchange cover (301), which is connected to a filter cover (201). A spiral heat exchange tube (302) is fixedly connected to the inner cavity of the heat exchange cover (301). The two ends of the spiral heat exchange tube (302) pass through the two inner walls of the heat exchange cover (301) and extend to the outer side of the heat exchange cover (301) near both ends.

3. The waste heat recycling mechanism for a melting furnace according to claim 2, characterized in that: The spiral heat exchange tube (302) is fixedly connected to a water inlet pipe (303) and a water outlet pipe (304) at both ends. An exhaust port (305) is fixedly fitted inside the heat exchange cover (301) at the upper part. A water pump (4) is fixedly connected to the water inlet end of the water inlet pipe (303), and a water storage tank (5) is fixedly connected to the water outlet end of the water outlet pipe (304).

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